This section may contain outdated information that is inaccurate for the current version of the game. The last version it was verified as up to date for was 1.5.

These buildings are built on a state level. Control of state resources or buildings requires controlling provinces worth at least 50% of the VP of that state, even if that does not include the province where the building icon is located. Airbases will appear, but do not become usable, unless the player also controls the province containing the airbase.

Name

Cost

Maximum level

Effect

Infrastructure

3000

10

Increases supply and supply throughput. Increases the speed of land units. Resources output is increased by 10% per level. Increases construction speed of shared buildings.

Air base

1250

10

Bases and repairs air units. Each air base level can host 200 aircraft.

Anti-air

2500

5

Damages attacking air units and reduces damage from bombing. Note that the Anti-Air emplacement only attacks those aircraft attacking the state, not units within the state. This means strategic, tactical, and naval bombers that attack buildings or ports will possibly take damage if there are Anti-Air emplacements, but enemy fighters flying air superiority missions in the state do not take damage.

This section may contain outdated information that is inaccurate for the current version of the game. The last version it was verified as up to date for was 1.4.

Like state buildings, shared buildings are built on a state level; however, they share a limited number of slots. This is perhaps the most important category of constructions, since it contains the factories necessary for production.

Name

Base Cost

Maximum level

Effect

Civilian factory

10800

20

Produces consumer goods and constructions, or can be used for trade. Base output is 5 (per day).

Construction speed of shared buildings depends on the level of infrastructure in the state. Construction speed is multiplied by

Where the INFRA_MAX_CONSTRUCTION_COST_EFFECT in common/defines defaults to 1, and Maximum Infrastructure Level defaults to 10 in common/buildings.

So for example ×1.5 at 5/10 infrastructure. This bonus is applied after bonuses from tech, advisors, and national spirits, making 1 level of infrastructure a more powerful bonus than e.g. a War Industrialist. This encourages players to concentrate industry in central, high-infrastructure areas, although this must be balanced against the increased vulnerability of having all of one's industry in one place.

It is generally not economical to build more infrastructure solely for the purpose of increasing construction speed. Infrastructure is a relatively better deal in states with many empty slots; when planning to build civilian factories, refineries or reactors as they cost more; and at the start with countries with bad economy laws like the USA, as infrastructure construction isn't penalized like factory construction is.

Infrastructure provides diminishing returns to build times. Changing a province's infrastructure from 0 to 1 would require 5 military factories or 3 civilian factories to break even, 1 to 2 is 6 military or 4 civilian, all the way up to 9 to 10 which requires 16 military or 11 civilian.

The total amount of resources can also be increased by building infrastructure. Each level of infrastructure gives a resource increase to the total of all extracted resources in a state. The increase varies with both the starting quantity of resources and starting level of infrastructure.

This section may contain outdated information that is inaccurate for the current version of the game. The last version it was verified as up to date for was 1.3.

Each state has a category, which then decides the base number of shared slots. Various technologies give percentage bonuses to how many slots a state can have. Various National Foci may give additional bonus slots. The total number of slots is capped at 25.

This section may contain outdated information that is inaccurate for the current version of the game. The last version it was verified as up to date for was 1.4.

Civilian factories make all the improvements to a territory and are necessary to build any of the constructions listed under the “Constructions” tab. All nations start with a certain number of civilian factories and a percentage will be used for consumer goods, depending on the economy law and national spirits that are currently in place.

Civilian factories that are not used to produce consumer goods can be used for trade or to complete or repair the construction queued in the “Constructions” tab. It's possible to increase the number of civilian factories by building more, but this is limited by the number of shared buildings slots available in each state.

This section may contain outdated information that is inaccurate for the current version of the game. The last version it was verified as up to date for was 1.4.

Depending on economic laws and national spirits, a number of civilian factories will be occupied by producing consumer goods and are unavailable for construction or trade. This number is computed as a percentage of the total number of factories, rounding upwards. Factories are counted even when they are damaged and can't produce anything.

Suppose the civilian economy law is enabled (requiring 30% of civilian and military factories dedicated to consumer goods) and no other modifiers apply. A country has 50 military factories, 50 civilian ones and 20 Dockyards. It will then have30 (civilian) factories dedicated to consumer goods.

There are also modifiers which only affect a single type of building. These are, primarily, the political advisors (Captain of Industry, Fortification Engineer, Quartermaster General and War Industrialist) but can also be one of many other national spirits activated by national focuses or events.

This section may contain outdated information that is inaccurate for the current version of the game. The last version it was verified as up to date for was 1.2.

The return on investment of building an additional Civilian Factory will depend on the Construction Speed bonus as well the Economy Law currently in place, or expected in the future. The higher the Construction Speed bonus is, the more Output will be done by the newly built Civilian Factory and the faster it will accumulate an Output equal to its cost, 10800. This variable is the time, in days, required to recover the cost of building the factory, or payback time. The Economy Law will dictate what ratio of Civilian Factories are used for Consumer Goods and Output/Trade. The higher this ratio is, the longer the payback time of the newly built Civilian Factory will be. The payback time of a new Civilian Factory is given by the following formula:

The construction speed modifiers range between -70% and +65% and except for the lowest two modifiers, they all have multiple combinations to be achieved. In fact, there are 320 possible combinations of variables affecting Civilian Factory construction speed outside of national spirits and unique laws.

Minimum

0%

Maximum

Undisturbed Isolation

8000

2400

2087

Isolation

5539

2216

1773

Civilian Economy

4115

2058

1524

Early Mobilization

2743

1920

1239

Partial Mobilization

2250

1800

1091

War Economy

2218

1695

1027

Total Mobilization

2000

1600

970

Minimal Construction Speed is -70% for Undisturbed Isolation and goes up to -20% with Partial Mobilization. Maximum Speed is 15% for Undisturbed Isolation and 65% with Partial Mobilization. All Values are rounded up to full days.

Additionally, because it's possible to assign up to 15 Civilian Factories (when available) to the construction of a new Civilian Factory, the number of days it will take to build a new one is given by the following formula:

This section may contain outdated information that is inaccurate for the current version of the game. The last version it was verified as up to date for was 1.2.

Civilian Factories can be converted into Military Factories for 4000 and Military Factories can be converted into Civilian Factories for 9000. These base cost is modified by several national spirits and political advisors. To convert a factory simply click on the corresponding state, and hover over the factory that shall be converted. The game will ask for confirmation. After confirmation the conversion now appears in the construction tab, just like any other building project.

This section may contain outdated information that is inaccurate for the current version of the game. The last version it was verified as up to date for was 1.3.

Constructions may get damaged by combat or strategic bombing. They repair themselves at a rate of 1% per day. Civilian production may also get allocated to repair constructions at the same base rate as new constructions. This can speed up for the factories by researching Construction I to V, which will boost up the factory repair speed by 10% for every tier.